/// <summary>No need to call this directly, required of IQueryProvider</summary>
public IQueryable <TResult> CreateQuery <TResult>(Expression expression)
{
if (!typeof(IQueryable <TResult>).IsAssignableFrom(expression.Type))
{
throw new ArgumentOutOfRangeException(nameof(expression));
}
var queryable = new MongoAggregationQueryable <TResult> {
Provider = this,
Expression = expression
};
return(queryable);
}
/// <summary>
/// Gets our custom Aggregation Framework based queryable from a MongoCollection
/// </summary>
/// <typeparam name="TMongoDocument">The document type stored in the collection</typeparam>
/// <param name="collection">A Mongo collection to query</param>
/// <param name="allowMongoDiskUse">
/// If true, MongoDB can use the disk for the query if possible. If false it won't but there's
/// a risk that the query is too big to be handled in memory.
/// </param>
/// <param name="loggingDelegate">Callback function for debug logging</param>
/// <returns>An IQueryable for running Linq queries against</returns>
public static IQueryable <TMongoDocument> QueryablePlusPlus <TMongoDocument>(this IMongoCollection <TMongoDocument> collection, bool allowMongoDiskUse, Action <string> loggingDelegate)
{
var queryable = new MongoAggregationQueryable <TMongoDocument>();
queryable.Expression = Expression.Constant(queryable);
queryable.Provider = new MongoAggregationQueryProvider <TMongoDocument>(collection)
{
Queryable = queryable,
LoggingDelegate = loggingDelegate,
AllowMongoDiskUse = allowMongoDiskUse
};
return(queryable);
}
